Component of the Mediator complex, a coactivator involved in the regulated transcription of nearly all RNA polymerase II-dependent genes. Mediator functions as a bridge to convey information from gene-specific regulatory proteins to the basal RNA polymerase II transcription machinery. Mediator is recruited to promoters by direct interactions with regulatory proteins and serves as a scaffold for the assembly of a functional preinitiation complex with RNA polymerase II and the general transcription factors.
Belongs to the Mediator complex subunit 18 family.
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human breast carcinoma tissue labelling MED18 with ab71556 at 1/200 (1µg/ml). Detection: DAB.
Western blot - Anti-MED18 antibody (ab71556)
All lanes : Anti-MED18 antibody (ab71556) at 0.04 µg/ml
Lane 1 : HeLa whole cell lysate at 50 µg Lane 2 : HeLa whole cell lysate at 15 µg Lane 3 : HeLa whole cell lysate at 5 µg Lane 4 : 293T whole cell lysate at 50 µg Lane 5 : Mouse NIH3T3 whole cell lysate at 50 µg
MED18 antibody (ab71556) at 3 µg/mg lysate, staining human MED18 in HeLa whole cell lysate by immunoprecipitation. 1 mg of HeLa whole cell lysate was used, 20% of IP loaded. Detection was by chemiluminescence with 30 second exposure.